Just powered on the 397nm and 866nm tunable diode #lasers for Doppler cooling.   Next, a wavemeter will be added as a feedback loop to try and stabilise the frequencies.   Eventually they will be fired through the ion trap to cool Ca+ ions to milli-Kelvin temperatures.    #physics #accelerators<p><a href='posts/202609/post-20260928-181658-a.jpg'><img src='posts/202609/post-20260928-181658-a.jpg' loading='lazy' /></a></p>